PLT-5900 Removed automatic configuration of SiteURL (#5952)

* Revert "PLT-5765 Passed SiteURL to SendNotifications (#5705)"

This reverts commit a8e68bd890.

* Removed automatic configuration of SiteURL

* Reverted unintentional config changes

* Updated help text

* Added link to docs in Site URL warning

* Fixed merge conflict

app/command_loadtest.go

@@ -357,7 +357,7 @@ func (me *LoadTestProvider) UrlCommand(args *model.CommandArgs, message string)
 		post.ChannelId = args.ChannelId
 		post.UserId = args.UserId
 
-		if _, err := CreatePost(post, args.TeamId, false, args.SiteURL); err != nil {
+		if _, err := CreatePost(post, args.TeamId, false); err != nil {
 			return &model.CommandResponse{Text: "Unable to create post", ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
 		}
 	}
@@ -396,7 +396,7 @@ func (me *LoadTestProvider) JsonCommand(args *model.CommandArgs, message string)
 		post.Message = message
 	}
 
-	if _, err := CreatePost(post, args.TeamId, false, args.SiteURL); err != nil {
+	if _, err := CreatePost(post, args.TeamId, false); err != nil {
 		return &model.CommandResponse{Text: "Unable to create post", ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
 	}
 	return &model.CommandResponse{Text: "Loaded data", ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}